Loft conversions change your roofline — and that makes them one of the more closely scrutinised application types. Councils scrutinise visibility, overlooking and street character more closely than for ground-level work. Here's what the data shows in Harrow.
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Loft conversions face more scrutiny than rear or side extensions because they change the property's profile from the street. Dormers, mansards and hip-to-gable alterations are particularly sensitive.
Two houses on the same street can get different outcomes.
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Not all applications are treated equally. Here's how loft conversions stack up against other common projects in Harrow.
| Type | Decisions | Rate |
|---|---|---|
| Hip-to-Gable Conversion | 66 | 86.4% |
| Conservatory | 588 | 80.8% |
| Outbuilding | 1,794 | 78.8% |
| New Build | 63 | 77.8% |
| Front Extension | 1,922 | 77.3% |
| Extension (General) | 923 | 76.7% |
| Garage / Parking | 3,725 | 76.4% |
| Wraparound Extension | 290 | 75.9% |
| Rear Extension | 10,671 | 75.4% |
| Dormer | 4,314 | 74.6% |
| Side Extension | 4,286 | 73.7% |
| Loft Conversion | 119 | 70.6% |
| Basement | 268 | 69.8% |
| Flat Conversion | 278 | 63.3% |
| Change of Use (Residential) | 761 | 62.5% |
| HMO | 304 | 55.6% |
| Annex | 78 | 43.6% |
35 loft conversion applications in Harrow have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.
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